Electrical Connection
Liquisys M CCM223/253
26
Hauser
4.1.6
Three-point step controller for Cl
2
/ ClO
2
/ total chlorine
Connect the continuously variable motor valves as follows:
• Connect the "closing" contact of the motor valve to relay 3.
• Connect the "opening" contact of the motor valve to relay 4.
4.1.7
Alarm contact
4.2
Post-connection check
After the electrical connection, carry out the following checks:
a0006415
Fig. 23:
Recommended fail-safe switching for the alarm contact
A Normal operating status
B Alarm condition
Normal operating status:
Device in operation and no error message
present (alarm LED off)
• Relay energized
• Contact 42/43 closed
Alarm condition
Error message present (alarm LED red) or
device defective or voltage-free (alarm LED off)
• Relay de-energized
• Contact 41/42 closed
Device condition and specifications
Notes
Are the transmitter and cables damaged on the outside?
Visual inspection
Electrical connection
Notes
Are the mounted cables strain relieved?
Cable run without loops and cross-overs?
Are the signal lines correctly connected in accordance with the wiring
diagram?
Are all screw terminals tightened?
Are all cable entries installed, tightened and sealed?
41
42
43
41
42
43
A
B
Summary of Contents for Liquisys M CCM223
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